Reuse Functions from open-source library

I was wondering how do you use/implement external javascript files to run as an event and how to use 3rd party libraries in javascript?

You need to know javascript. You can make an official wrapper by making a JS extension and merging it to gdevelop or make an event based extension with js events wrapping the extension.

You can also request it to be wrapped and wait for a contributor to try and wrap it :wink: